
PROGRAMMING
B–63604EN/01
13. FUNCTIONS TO SIMPLIFY
PROGRAMMING
159
The canned cycle for drilling simplifies the program normally by
directing the machining operation commanded with a few blocks, using
one block including G code.
Following is the canned cycle table.
Table 13.3(a) Canned cycles
G code
Drilling
axis
Hole machining
operation (– direction)
Operation in the
bottom hole position
Retraction operation
(+ direction)
Applications
G80 ____ _____ _____ ___ Cancel
G83 Z axis Cutting feed / intermittent Dwell Rapid traverse Front drilling cycle
G84 Z axis Cutting feed Dwell→spindle CCW Cutting feed Front tapping cycle
G85 Z axis Cutting feed _____ Cutting feed Front boring cycle
G87 X axis Cutting feed / intermittent Dwell Rapid traverse Side drilling cycle
G88 X axis Cutting feed Dwell→Spindle CCW Cutting feed Side tapping cycle
G89 X axis Cutting feed Dwell Cutting feed Side boring cycle
In general, the drilling cycle consists of the following six operation
sequences.
Operation 1 Positioning of X (Z) and C axis
Operation 2 Rapid traverse up to point R level
Operation 3 Hole machining
Operation 4 Operation at the bottom of a hole
Operation 5 Retraction to point R level
Operation 6 Rapid traverse up to the initial point
Operation 1
Operation 2
Operation 3
Operation 4
Operation 5
Operation 6
Rapid traverse
Feed
Initial level
Point R level
Fig. 13.3 Drilling cycle operation sequence
13.3
CANNED CYCLE FOR
DRILLING (G80 – G89)